Standard 1” Furnace FilterYou’re standard 1-inch furnace filter-the kind you replace monthly, just don’t get the job done. The standard furnace filters are designed to protect the HVAC components…not you! These types of filter are only about 5-10% efficient, and even less efficient against potentially health-threatening particles 10 microns or smaller. Some retailers also offer ‘premium’ 1” deep filters with higher efficiency ratings. However, these filters can also increase the pressure drop in the HVAC system, there by decreasing the system’s performance.
1” Electronic Filter (GOOD)This filter is normally used when there is a space issue and no other filter will work. This filter must have 110 volts AC supply for power, but has very low 2-watt power usage. Has low airflow resistance for the life of the media. Is easy to maintain, this filter is an improvement over the standard 1” furnace filter.